Physics
Which of the following is preferred for accelerating electrons?

Betatron
Van de Graft Generator
Synchrotron
Cyclotron

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Physics
Why two thin shirts can keep us warmer than a single thick shirt in winter ?

No radiation of heat takes place
Air layer between two shirts behaves like insulating media
Air layer between two shirts works as good conductor
Two thin shirts become thicker so prevent transmission of heat

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Physics
The nature of fuse wire is

High resistance and high melting point.
Low resistance and low melting point.
High resistance and low melting point.
Low resistance and high melting point.

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